Feeding mechanism for nut-making machines.



H. M. BRIGHTMAN.

FEEDING MECHANISM FOR NUT MAKING MACHlNES.

. 7 APPLICATION FILED JULY 7. I916. 1,212,605. Patented Jan. 16,1917.

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HARRISON M. BRiBHTMAN H. M. BRIGHTMAN. FEEDING MECHANISM FOR NUT MAKING MACHINES- APPLICATION FILED JULY 7, 1915.

Patented Jan. 16, 1917.

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wumtoz I'iARFQISUN M|BRIGHTMAH HARRISON 1V1. BRIGHTMAN, OF COLUMBUS, OHIO.

FEEDING MECHANISM Specification of Letters Patent.

FOR NUT-MAKING MACHINES.

Patented Jan. 16, 1917.

Application filed July 7, 1916. Serial No. 107,949.

To all whom it may concern:

Be it known that I, HARRISON M. BRIGHT- MAN, a citizen of the United States of America, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain-new and useful Improvements in Feeding Mechanisms for Nut-Making Machines, of which the following is a specification.

This invention relates to improvements in feeding mechanism for nut making machines.

While for convenience of illustration and description I shall refer to the device as feeding mechanism for a nut making machine it will be understood that the mechanism is applicable for use with other machines such as automatic screw making machines, cutting, or grinding machines, etc.', to which the stock or work is to be fed automatically and intermittently. The stock or work may be in the form of shafting, bars, tubing or the like, and my invention consists in certain noveljcombinations and arrangements in a reciprocating carrier and in a stationary retaining device whereby the work or material is fed intermittently and reliably to the machine.

In the accompanying drawings which illustrate one complete example of the physical embodiment of my invention: Figure 1 is a view in side elevation of a feeding mechanism involving the principles of my invention. Fig. 2 is a top plan view of the machine of Fig. 1. Fig. 3 is an enlarged side elevation of the carriage of the device. Fig. 4: is an end elevation of the carriage. Fig. 5 is a sectional view of the carriage on line AA Figs 3. Fig. 6 is a longitudinal sectional view of the carriage on line B B of Fig. 1. Fig. 7 is a view similar to Fig. 6 but illustrates the adaptability of the spring clutch eccentric and the adjustable eccentric to a larger piece of stock being fed to the machine. Fig.8 is a view in elevation on line CC of Fig. 1. Fig. 9 illustrates the action of the clutch eccentrics when not gripped. as upon the return stroke of the re ciprocating carriage. Fig. 10 illustrates the manner of turning back the spring clutch eccentric in order to permit the entrance of the front end of the stock to the carria e.

In illustrating my invention I have shown enough of the machine 1 to indicate the application of the device, and it will be understood that the stock or work is to be fed, intermittently, to the right in Figs. 1 and 2,

sothat the working stroke of the reciprocat ing carrier 2 will ,pullthe work 3 to the right, and feed it to the machine] While the carrier is returning after itsworking stroke, the retaining clutch device indicated as a whole by the numeral- 1, holds the work against reverse movement.

The carrier and the retaining device are both supported upon a frame comprising parallel rods 5, 5, suspended between an upright or post 6 at one end and fixed in a bracket 7 at theother ends, the bracket being bolted to the machine 1, as shown in Figs. 1

and 8.

The carriage or carrier comprises a U- shaped frame 9 formed w1th mtegral perforated lugs 10 adapted toslide over the two rods 5 5, and the upright armsofthe frame are provided with alined openings .for a longitudinally disposed housing 11 formed with open bosses 12 seated in the openings and the cap plates 13 of the frame hold these bosses by means of" the securing bolts 14:... v

There are two eccentric grippingrolls 15 and 16 supported in transverse bearings in the housing, the upper roll 15 being revoluble, spring actuated, and self adjusting, while the lower roll is normally held stationary, but may be" adjusted for different sized stock.

The upper roll 15 is revoluble with its shaft 17 which is arranged transversely of the housing and suspended between two bushings 18 and 19"formed with flanged heads 20 and 21 respectively, and held in adjusted position in the housingby means of the set screws 22 and 22 which are passed down from the top of the housing and bear upon the bushings. The roll is urged to its work by means of the spring 23 having one end fixed to the head 20 of the bushing 18 audits other end attached to the roll.

The tension of the spring, and consequently the grip of the roll mav be adjusted by turning the bushing 18 with relation to the roll and screwing tight the set screw 22'. Because of its eccentric arrangement the roll 15 grips the stock when the carriage is moving to the right, but is permitted to revolve slightly, when freed from the stock and moving to the left as indicated by the arrows in Fig. 9. The roll may be turned back against the tension of the spring when the stock is being entered between the rolls 15 and 16, by the use of a tool 24. indicated by dotted lines in Fig. 10, which is passed through openings 25 in the roll, so that the stock may be easily passed between the rolls at the start.

The lower roll of the carriage, which is normally stationary, is designed to slide along the underside of the stock on the re turn stroke of the carriage but co-acts with the upper roll in gripping the stock on the working stroke of the carriage. This roll also has a shaft, 26, supported in trunnions or open bosses 27 27 seated in openings in the housing and secured by set screws 28 28. The relation of the roll to the stock may be adjusted by turning the roll 16 relatively to the boss or bushing 27, and the tooth 29 of the roll is fitted in a selected groove or radial socket 3 0 in the bushing 27, after which the bushing may be fixed by using the set screw 28.

The construction of the retaining clutch device or gripper 4 is similar to that of the carriage. The U-shaped frame 31 supports the housing 32, and the rolls 33 and 34 of the retaining device are eccentrically supported on their shafts 35 and 36 in the housing, to grip and hold the work against reverse movement on the out stroke of the carriage. The frame 31 may be fixed to the rods 55 by using the set screws 37, and as many retaining devices may be used as are required.

The mechanism for reciprocating the carriage on its supporting rods comprises a cam wheel 38 on the driven shaft 39 revolving as indicated by the arrow on the cam wheel, and the rotation of the cam wheel oscillates the cam lever 40 which is pivoted at 41 on the machine and has a wheel or roller. 42 at its free end bearing on the cam Wheel. At its other end the cam lever is pivoted to a link 48, which in turn is pivoted in the ears 44 of the carriage frame. A counterweight 45.011 the arm 46 causes the operating lever to oscillate and move the carriage on its working stroke, and the cam device positively returns the carriage onits out stroke.

From the above description it will readily be seen that the action of the weight causes the carriage to draw or pull the stock toward the right in-Figs. 1 and 2 and feed it to the machine. On the out stroke, the lower roller of the carriage slides along on the work or stock as does also the upper roller, while the stationary retaining device holds the stock against reverse movement. When the weight initiates the return or working stroke of the carriage, the gripping roller 15 closes on the work which is held between the rollers 15 and 16, and the carriage draws the work to the right, feeding it to the machine. The gripping rolls of the retaining device are inactive, as will be understood while the stock is moving to the right, but should the stock be moved only slightly to the left, these rolls will at once become active and co-act in holding the stock against reverse movement.

What I claim is p 1. In a feeding mechanism and in combination, a carriage comprising a frame and a pair of spaced eccentric gripping members, one of which is stationary and adjust able, while the other member is spring pressed to co-act with the stationary mem her.

2. In a feeding mechanism the combination with a supporting frame of a pair of eccentric gripping rolls one of which is stationary and the other spring pressed to co-act with the stationary roll.

In a feed mechanism the combination with a supporting frame and a housing through which the work is adapted to pass, of a pair of eccentric gripping rolls supported in the housing, a pair of rotatable and adjustable bushings for each roller in the housing, and one of said rolls having a spring attached to one of the bushings urging it to gripping action;

4. In a feed mechanism the combination with a supporting frame and a housing having open bosses seated in the frame, of a pair of eccentric rollers one of which is spring pressed to co-act with the other and each roller having an aXle, a pair of bushings for each aXle supported in the housing, one of said bushings having means for adjusting the tension of the spring pressed gripping roller, and another bushing having means co-acting with a portion of the other roller for adjusting the eccentricity of the roller.

5. The combination in an intermittent feed mechanism with a pair of supporting rods and a stationary adjustable retaining device for the work, of a reciprocating carriage having a pair of perforatedllugs slid able on the rods, and a pair of rollers supported in the carriage one of which is eccentric and adapted to grip the work on the workingstroke of the carriage.

6. In a feeding mechanism, the combinationwith a supporting frame of a housing having alined open basses supported therein through which the work is adapted to pass, of a pair of gripping members sup ported in the housing, one of said members being adjustable to engage different sized work and means whereby said member may be positively secured in its adjusted position, and the other member having means urging it into gripping action with the work.

In testimony whereof I affiX my signature.

HARRISON M. BRIGHTMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G. 

